I drove a version of this engine in my dad’s Peugeot van and merging into traffic was terrifying. Dated is definitely the word, dangerous and obsolete would be a couple of others. An absence of power is one thing, I drove aircooled VWs for years, but the sheer reluctance of a NA diesel is rotten.
The 1.7 turbo diesel wasn’t much better. Good for its time. Gutless and shit by modern standards.